Water

Overaa delivers complex water and wastewater infrastructure through a collaborative approach backed by decades of experience and more than $1 billion in California water projects completed over the last decade. 

Collaborative Delivery
We partner early to reduce risk, solve challenges, and improve outcomes. Our expertise spans storage solutions, recycled water systems, groundwater systems, and emerging technology treatment upgrades.

Private Market Design-Build
We deliver customized solutions for performance, schedule, and long-term value.

Public Water Experience
We bring deep public agency experience and are committed to building infrastructure that serves communities for the long term.

Stanislaus Regional Water Authority Water Treatment Plant

Water

San Jose Cogen Wastewater Facility

Water, Energy

Columbine Station Improvements

Water

Manteca TCP Mitigation Project

Water

Patterson Pass Water Treatment Plant Improvements

Water

Belgatos Reservoirs Replacement

Water

Brentwood WWTP Expansion Phase II

Water

SASM Wastewater Treatment Plant Rehabilitation

Water

Miner’s Ranch Water Treatment Plant Improvements

Water

Davis-Woodland Water Supply Project

Water

Santa Rosa Cogeneration Facility

Water, Energy

Fairfield Suisun Bioenergy Generation

Water, Energy

CCCSD Pump Station Phase 2A

Water

CCCSD Mechanical & Concrete Renovations

Water

Pacific Grove MBR Local Recycled Water Project

Water

Palm Valley Water Reclamation Facility

Water

Mt. View Sanitary District UV Replacement

Water

Windsor UV Disinfection Facility Improvements

Water

Manteca Water Quality Control Facility Phase III Expansion

Water

Dixon Wastewater Treatment Plant

Water

Sobrante & Upper San Leandro Water Treatment Plants Ozone Improvements

Water

Livermore Primary & Secondary Improvements

Water

South County Water Supply Program

Water

Gilroy WWTP Plant Expansion

Water

Palo Alto Sludge Dewatering and Loadout Facility

Water

Sunnyvale Pretreatment Facility Package 2

Water

Deuel Vocational Institute Groundwater and Non-Potable Water Distribution System

Water

Tracy WWTP Expansion Phase 1B

Water, Concrete & Seismic

Hollister Wastewater Treatment Plant

Water

Manteca Water Quality Control Facility Schedule C

Water

John Jones Water Treatment Plant Expansion

Water